Bolt On Miniature Circuit Breakers

Siemens bolt on circuit breakers protect electrical circuits & connected equipment against short circuits & flow of high magnitude currents for manufacturing facilities, processing plants & power distribution applications. These solid state breakers are ideal for reverse feed operations and feature long time & instantaneous trip functions for reacting against severe short-circuits at once while avoiding tripping on mild overloads. They come with load & line side lug terminals for ease-of-wiring while eliminating loose connections. SLD frame molded case circuit breakers are available in 500 & 600A current ratings on Raptor Supplies.

Siemens SMD Series circuit breakers are designed for limiting let-through current for protecting downstream components in power distribution applications. These molded case circuit breakers feature a bolt-on design for ease-of-installation & wiring, and solid state components for long-term durability & quick response against faulty currents. Selected models feature short time, instantaneous & long time trip functions for reacting against severe short-circuits at once while avoiding tripping on mild overloads. These 3 pole, 800A circuit breakers are available on Raptor Supplies.

Siemens FD Series circuit breakers are ideal for industrial switchboards, as well as lighting & control panels for protection against current surges & overloads. These UL-listed circuit breakers feature thermal magnetic trip for long time and instantaneous trip functions during severe short circuit conditions while avoiding nuisance tripping in mild fluctuations. They come equipped with line & load lug terminals ensuring hassle-free wiring arrangement and provide support against extreme vibration. Sentron Series circuit breakers are available in current ratings ranging from 70 to 250A on Raptor Supplies.

Siemens JD Series circuit breaker trip units are designed to interrupt circuits exceeding the ambient operating temperature. These devices feature a non-interchangeable, thermal-magnetic trip mechanism offering both instantaneous and time-delayed current limiting functions. They are suitable for use with JD, HJD, HJXD, HHJD, HHJXD Series molded case circuit breakers and are available in amperage ratings of 200A, 225A, 250A and 400A on Raptor Supplies.

Siemens MD Series circuit breaker trip units are designed for protecting electrical appliances and are used in conjunction with branch circuit protection while connected with external devices. These Sentron Series trip units feature a thermal-magnetic, non-interchangeable trip overriding mild overloads while instantly reacting to severe current spikes for maximum current limiting protection. They are suitable for use with Siemens MD & HMD molded case circuit breakers for maximum efficiency. These trip units feature a 3 pole design with MD-T type frame for added versatility and are voltage rated at 600V. MD Series trip units are available in current ratings ranging between 500A & 800A on Raptor Supplies.

Siemens ND Series interrupt the current flow and protect downstream components from severe overload and short circuit conditions. These Sentron Series trip units feature a thermal magnetic trip for providing both instantaneous and long time current limiting protection. They are suitable for use with Siemens ND & HND molded case circuit breakers for maximum efficiency. These trip units feature a 3 pole design with ND-T type frame for added versatility and are voltage rated at 600V. ND Series trip units are available in 1000A & 1200A current ratings on Raptor Supplies.